Hello Friends

[Dr. Marneaus]

That being said, and getting deeper into things, this thread, while full of valuable information, is perfectly indicative of the help I have received, and the advice I have been given, everywhere I have looked.

One person says "do this" the other says "do that". One person says "thats right" the other person says "thats wrong." One person says "this'll work" the other says "no it wont." I'm not even talking about just the driveshaft crap, but thats just how it is everywhere, with every item or any vehicle or anything. Internet is a great resource but there's a bunch of stuff to wad through to find what's right or what you need. I am not a mechanic, I am not a driveshaft specialist, I have no formal training, I am a weekend hobbyist who has like 38 other hobbies too. I do not have a trusted source or specialist for working on our somewhat oddball vehicles, so I rely on everybody on the online, and places like this and IFSJA are increvibly valuable resources and have helped me a ton....but....

This is where it becomes frustrating because about every choice I make turns out to be wrong, or maybe it's everybody I choose to listen to for whatever reason. It's hard not knowing what I'm doing and then trying to figure it out when for all i know everybody could be talking out of their arse. So i eventually chose to go to a professional that told me my angles were "atrocious" and now I am doing a thing to make my angles not so atrocious. If it doesnt work, then back to the drawing board, but it should be just as easy to fix, if not easier now that the angles will be a lot tighter, no?

If they cant fix it, back to the drawing board again. It's only time, it's only money, it's only mental anguish! Eventually I'll run out of one of those and cut my losses then go buy a 1998 honda civic.

[Stuka]

Well, that is unfortunately the way the internet works. Its not like we check credentials at the door. Everybody can say what they think may or may not be right. I hope I am not one of the ones that lead you wrong. I always try to not mislead people, and really spend more time than I should in wording responses most of the time. But even when speaking with experience, there are so many different factors that can change the way one vehicle works compared to another. It does seem like you have had a rough time. Be it with all those brake issues, or this. I do really hope you get it all back in working order.

But hey, if you ever decide to cut your losses get that Civic, let me know.

[Dr. Marneaus]

Well, since you mention it, i blame you and babywag exclusively, for all of the problems i have had.

Lol, no, like I said it's totally my fault because I apparently don't screen the information or dont know any better or whatever. I'm not blaming anybody, not saying anybody in particular is wrong, just saying how it is all presented and what makes it tough.

It'll be back on the road sooner or later, again, it's only time and money. If I cut my losses there aint no way I'm selling it on here or ifsja, y'all know how much of a POS it actually is! hahaha

[letank]

As it is said, the internet information is worth what you paid for it....

Imagine how the pre-internet guys used to do it.... look at it... think about it.... gather some infos from friends, coworkers, pay someone to do it.... or try to bind it into shape.

[babywag]

Well, since you mention it, i blame you and babywag exclusively, for all of the problems i have had.

Lol, no, like I said it's totally my fault because I apparently don't screen the information or dont know any better or whatever. I'm not blaming anybody, not saying anybody in particular is wrong, just saying how it is all presented and what makes it tough.

It'll be back on the road sooner or later, again, it's only time and money. If I cut my losses there aint no way I'm selling it on here or ifsja, y'all know how much of a POS it actually is! hahaha

Wouldn't be the first time someone has blamed me for somethin'

Maybe the axle(s) I got a hold of weren't the original NT QT axles?
Maybe your frame is different than mine was (tweaked/bent)....40 year old vehicle and all.
Who knows.

Like I said hope it works for you, but you still should check those angles.

[will e]

You should have asked me. I know everything.


Drivelines confuse me as well. I read lots about u joints and cardan joints an cv joints and 'this isn't really a cv joint it's a something else' and how at angles the shaft accellerates and deaccellerates during the rotation and I think i get most of it but it is still a little confusing.

I hope you get your problem fixed. It can be frustrating and I read how you are starting to not like the truck. Even more frustrating. You did a bolt in 'upgrade' and it has been nothing but problems... but you will work through it.

[haminawag]

.....Imagine how the pre-internet guys used to do it.... look at it... think about it.... gather some infos from friends, coworkers, pay someone to do it.... or try to bind it into shape.

Well I AM one of those pre-internet guys, and what we'd do is sit in the pits and watch the kids fart around with trying this and that to fix their drag cars problem, instead of asking those who had the experience, or going to the library and studying the problem, and thereby using their brain power to fully understand the situation. Experience is a hugely valuable tool, but it needs to be gained in a sensible manner, not by taking pot shots and hoping to hit on the answer.

Dr. Marnaeus' thinking on this matter is clear, start by reversing what went wrong. His was the first build I read when I got my '79 Wag and found this site and IFSJ. It was very interesting to watch what someone was doing who had the same (or similar) thought processes as myself, but with a whole heck of a lot more energy. So I feel a kind of kinship with him regarding this problem of his. My only words of advice, if you can call it that, are to remember that hanging that skinny little body of yours off of your slip joint will not give you any indication of the dynamics at play under that 5000 lb. truck at 45 MPH. If that DS looks like it's too far back, it probably is. And get that pinion angle taken care of, those two things ought to help a lot. Good luck to ya, but don't give up on it, 'this too shall pass'. And then you'll have a lot of info. to share with the next guy who'll have similar problems.

[fulsizjeep]

Yeah, what Tony has been trying to say.

This is the real reason why I posted "wild goose chase" on the mothership. The truth is out. Shoot Me.

[jsinajeep]

I am running the 77 w/6in lift w/360 th400 and swaped in D20 w/QT off set rear axle and had no vib. I did go with a longer drive shaft
because the old one just stuck inside of the slip joint about 1 1/4". I did go with the CV joint because it was all FREE and gave me 2 1/4" slip.
One of the yoke from the QT will fit the rear of the D20 and a CV joint will fit it.

[will e]

I am running the 77 w/6in lift w/360 th400 and swaped in D20 w/QT off set rear axle and had no vib.

Well sure there is no vib, you don't go over 55mph... lol

[jamesdart]

all I know is, I have the same amount of lift, same tires, same rear axle, but I have a 700r4 and dana 300 with 4.10s. I do have brand new driveshafts, i went through the transfer case checked and adjusted what i could, and the diffs are all fresh. its not a daily driver but I have to get on the highway or interstate to hit any wheeling spots. ill just say I keep up with traffic. I get some vibes initially but they go away after a few min on the highway. I believe that is just the tires. i put the lift on while it was still a th400 and qt. the springs didn't come with angle shims. i put it together and test drove it, no vibes so i never even checked it.
you clearly need to swap in a 700r4, dana 300 case, and 4.10s to get rid of the vibes.

[jsinajeep]

I am running the 77 w/6in lift w/360 th400 and swaped in D20 w/QT off set rear axle and had no vib.

Well sure there is no vib, you don't go over 55mph... lol

LOL old man, old way

[kswagoneer]

Opinions are like @ss holes everybody has one... The best way to learn is by doing and experimenting sure you can take advice and listen to those more experienced but fact of the matter is when dealing with 40 year old jeeps its always an adventure. Id look at it positively worst comes to worst you have a spare rear axle! I would be getting rid of the compound angle as well... There is a reason why car manufacturers set drive lines up as straight as possible, less wear on the u joints. Ive been driving my wagoneer for a year and have just had some vibes start appearing and believe me im losing sleep at night thinking about allll the things that can cause vibrations while driving. I think in dealing with issues like this in a vehicle no matter how much experience you have you just have to start playing and throwing parts at it and see what you learn... I wouldnt be disappointed in the purchase

[Dr. Marneaus]

Yeah, what Tony has been trying to say.

This is the real reason why I posted "wild goose chase" on the mothership. The truth is out. Shoot Me.

bang bang bang.

you clearly need to swap in a 700r4, dana 300 case, and 4.10s to get rid of the vibes.

Lets do it. Even more sound logic than what I am using!

Opinions are like @ss holes everybody has one...

But mine is the best! Wait what?